Thomas v



T. V. ALLIS.

BARBED WIRE BLANK POREENGES.

No. 248,629. A Patented Oct. 25,1881. ,A

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BARBED-WIRE BLANK FOR FENCES.

SPECIFICATION forming' part of Letters Patent No. 248,629, dated October25, 1881.

Application tiled September 18, 1880.

To all whom it may concern Be it known that I, THOMAS Y. ALLIs, of NewYork, county and State of New York, have invented a new and usefulImprovement in Blanks for Barbed Metallic Fence-Rods, of which thefollowing is a specification.

This invention is an improvement ofthe blank for barbed fencing on whicha patent was allowed to me the 25th day of August, 1880, which isdescribed as being designed for the manufacture of twisted barbedmetallic fencing, having one row ot' barbs made out of a tin of saidrod, with narrow webs of said tin along the rod and connecting the basesof the barbs, said rod also having a narrow plain tin on the sideopposite to said webs, between the barbs, ot about the same width,forbalancing the same when the rod is twisted after the barbs are formed onit, to make it twist straightly,7 and which said blank is described ascomposed of two cores or ribs, connected by a thin web, to form thebarbs and their connecting-webs, and a narrow lin to each core or ribopposite the said connecting-webs, to make the aforesaid balancing-tinsfor insuring` straightness in the rods when twisted after the barbs areformed.77

The prominent feature ot this kind ot' barbed fencing is a core or rod,with barbs that are integral with the core, the core being in thenatural or ordinary form of a rod-that is, roundor its approximate formsand the tins being thin and fiat, which naturally led at irst in themaking of it to such form of the two parts in conjunction that theangles at the junctions of the core with the webs prevented the punchesused in cutting away the webs and forming the points from working closeto thefcores, (as will be more particularly described further on,)thereby making it necessary to leave the aforesaid narrow webs for theprotection ofthe dies, which is mainly their purpose, and they makenecessary the balancingtins. By subsequent practice and expe rience aform of integrally-combined core or rod and barbs, based on the samegeneral feature, has been found out, in which it is not necessary forthe protection of the die to limit the distance at which it may cut uptoward (No model.)

the core, and there is no need ot' leaving any metal between the basesof the barbs other than what constitutes the core itself, and nodistinctive balancing-iin is required. It also has anotheradvantage-viz., the metal maybe rolled down into the blank from thebillet with much less wear and damage to the rolls than the other, aswill be more fully explained hereinafter.

The present invention consists of a blank for this improved form of rod,in which two parallel cores or ribs and a connecting-web for a row ofbarbs to each core or rod are made in one strip, the said cores and webbeing merged the oneinto the other by lines ot uniform graduation fromthe thickest part ot the core at center to the center of the web, whollyavoiding the abrupt change of form at the junction of the two parts, asshown in my former application, that prevented. cutting as close asdesired to or from the cores or ribs. t The cores have equal and uniformextension on opposite Sides of a longitudinal line along its thickestportion, and terminate on the web side at the line along' which the cutsare to be made. From this form of blank an article ot" this kind ofbarbed fencing may be produced of which all the metal except the barbsis comprised in the core or rod without any distinctive con-lnecting-web between the barbs or any counterbalancing-iin, and which maybe twisted straight and be rolled and punched to better advantage.

In the accompanying drawings,Figure lis a plan of a couple of shortsections of barbed fencing as made from the improved blank which is thesubject of this application. Fig. 2 represents two cross-sections of theblanks, also sections of the rolls, showing the form of the grooves forshaping and reducing the blanks. Fig. 3 is a view of the blank in modiedform. Fig. 4 represents a section of the blank as heretofore made, alsoa section of a pair of rolls, illustrating the action of rolling it.Fig. 5 is a representation of the method of punching away portions ofthe ns to form the barbs, and shows why the form of rod heretofore madecannot be punched close to the core, and

the necessity for leaving between the barbs the connectingwebs,whichdemand the balancingtin.

As before intimated, the form at Iirst and most naturally occurring tothe mind of one proposing to make an integrally-combined rod with barbsfor fencing is a core substantially in the form of a rod, a., Figs. 4and 5, Whether round or other equivalent form, with a fin, b, of thinand broad dimensions, for the barbs, the fin being mostly cut away toform barbs, as c, Fig. l. The only practical way known up to this timefor cutting away the surplus metal is to punch ,it out by a punch, d,and die c. Naturally the punch should cut close to the core a-say at orabout the dotted line f; but practica-ily it cannot be done, because thethin body n of metal between the groove in the face of the die for theunder side of the core a and the cutting-edge of the die breaks olfunder the hard strokes of the punch; consequently the cutting-edge ofthe die must be located a suit able distance from the edge of thegroove, and in the direction of the points of the barbs-say at the lineg-to provide sufficient breadth of metal between said edge for strength.This prevents cutting the spaces or notches between the barbs as closeto the cores as it is desirable to do, and causes the webs f g to beleft between the barbs along the cores, and these webs make necessarythe opposite balancingfn h, to insure straightness when the rod istwisted. These webs also make the barbs from aweb or fin of a givenbreadth so much shorter. The angles between the cores or ribs and websin this form of blank also make it difiicult to keep the edges i of thegrooves in the rolls j in working condition, for, as will be noticed byexamination of Fig. 4, the said edges are tirst to impinge upon thesides ofthe cores at points where the metal has powerful wedge-likeaction between said edges to wear and chip them 01T', thus makingthe costeil roll-turning very great, besides doing the work much slowerthan is desirable.

I propose to make a different form of this barbed fencing, in the makingot' which, by reason ot' such form, these diiiculties will be avoided.The core or rib portion a/ of this new form is greatly widened in theplane of the barbs and diminished the other way, so that withoutcontaining more metal than as heretofore made the sides extend each wayin uniform lines from the center ot' said core to the edges l and fm, inwhich they terminate, which said edges are of the same thickness as theweb out of which the barbs are formed, and the radius of said edges isdouble or more than the transverse radius of the core.

The blank which I now propose for this improved form of barbed fencingconsists of two cores, of double or greater breadth than thickness,connected by a web in the plane of their breadth, the sides of saidcores being of such gradual and uniform shape from the center k to theedges Z m that the sides of the grooves in the rolls for making thecores merge in the plane surfaces of said rolls without any definiteedges t', the said sides being either plane, concave, or convex, as maybe preferred. It will be noticed that as these edgest' of the groovesfor making the old form of blank touch the metal before the planeportions of the rolls between the grooves and outside of them touch thefins and the webs, said edges force the metal of the cores down on theweb and fins close to the cores, so as to interfere with and prevent theaction ofthe plane portions of the rolls, except only where the metal isso pressed down from the cores. The effect of the rolls is much thegreatest upon the sides of the cores. The cores are thus subject to agreater elongating or drawing stress than the tins and connecting-web,which, consequently, have a resisting effect against such elongation.The shape of the cores and their corresponding deep-roll grooves preventlateral spread of the metal except from the centers of the cores, orthereabout outward, so that the reduction of the metal in the making ofthis form of blank is necessarily slow and difcult, and at the best itis limited to the workin g of the metal while hot,whereas itis highlydesirable to work the blanks over by cold-rolling in finishingrolls totoughen the metal and gage the blanks to size more accurately than canbe well done in the reducing-rolls.

By examination of the new form of blank now presented and theroll-grooves for making it, Figs. 1 and 2, it will readily be seen thatthe rolls impinge alike upon the cores from center to edges, and also onthe web between the cores, so as to have uniform eect across the wholebreadth, by which the process of reduction from the billet isfacilitated, as the metal can expand laterally as well as lengthwise.The reduction to size and for condensing the metal by cold -rolling isentirely feasible. The roll-grooves have a shape that is lasting. Thedies for punching away the surplus metal to form the barbs are enabledto be in more durable form, and, lastly, the article of fencing madefromthis blank is better, in respect to the strength ofthe barbs at thejunction with the core, by reason of the more gradual lines by whichthey merge in the cores, whereas the tins are liable to crack away fromthe cores in the other form, and by the facility of cold-rolling whichthis form affords the blanks can be rolled several gages smaller thanthe other can, by which the metal is made so milch tougherl that a rodof a given strength is fur-` nished considerably less in weight anddimensions, whereby the consumer is served at considerably lesscost,while the profitto the manufacturer will not be less, but may bemore, owing to the more economical manufacture. For equal sizes the rodproduced from this blank will be considerable stronger than one from theblank as heretofore made.

Having thus described my invcntion,what I claim, and desire to secure byLetters Patent, 1s

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' transverse diameter by concave, straight, or convex lines whichgradually merge into the plane of the web.

THOMAS V. ALLIS.

Witnesses:

A. P. THAYER, W. J. MORGAN.

